6WC7

Acyl carrier protein (ACP) domain bound to dehydratase (DH) domain in fungal fatty acid synthase (FAS)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Steric occlusion regulates proximal interactions of acyl carrier protein domain in fungal fatty acid synthase.

Lou, J.W., Mazhab-Jafari, M.T.

(2020) Commun Biol 3: 274-274

  • DOI: https://doi.org/10.1038/s42003-020-0997-y
  • Primary Citation of Related Structures:  
    6WC7

  • PubMed Abstract: 

    The acyl carrier protein (ACP) domain shuttles substrates and reaction intermediates in type I fungal fatty acid synthases via transient protein-protein interactions. Here, using electron cryo-microscopy (cryoEM), we report the structure of a fungal FAS stalled at the dehydration reaction, which precedes the final enoyl reduction in the fatty acid biosynthesis cycle. This conformation revealed multiple contact sites between ACP and the dehydratase (DH) and enoyl reductase (ER) domains that occluded the ACP binding to the adjacent ER domain. Our data suggests a minimal path from the DH to the ER reaction site that requires minute changes in the coordinates of the structured N- and C- termini of the ACP domain.

    • Organizational Affiliation: 

    Department of Medical Biophysics, University of Toronto, Toronto, Canada.


Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Fatty acid synthase subunit betaA [auth G]2,057Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: FAS1, YKL182W
EC: 2.3.1.86 (PDB Primary Data), 4.2.1.59 (PDB Primary Data), 1.3.1.9 (PDB Primary Data), 2.3.1.38 (PDB Primary Data), 2.3.1.39 (PDB Primary Data), 3.1.2.14 (PDB Primary Data)
UniProt
Find proteins for P07149 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P07149 
Go to UniProtKB:  P07149
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07149
Sequence Annotations
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Fatty acid synthase subunit alphaB [auth A]1,887Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: FAS2, YPL231W, P1409
EC: 2.3.1.86 (PDB Primary Data), 1.1.1.100 (PDB Primary Data), 2.3.1.41 (PDB Primary Data)
UniProt
Find proteins for P19097 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P19097 
Go to UniProtKB:  P19097
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP19097
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC2
MODEL REFINEMENTPHENIX

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)Canada419240

Revision History  (Full details and data files)

  • Version 1.0: 2020-06-03
    Type: Initial release
  • Version 1.1: 2020-07-22
    Changes: Database references
  • Version 1.2: 2024-03-06
    Changes: Data collection, Database references, Refinement description